Orbital Hotel Homework Sheet
Grade 9 Chemistry Atomic Architecture
Hotel Quantum: Orbital Registry
Concierge (Name):
Date:
Class / Period:
Score / Room:
Concierge Briefing: Welcome to your first night shift at Hotel Quantum! Electrons are arriving in droves looking for lodging. As Head Concierge, you must assign every electron guest (\(\uparrow\) or \(\downarrow\)) to their specific room and floor following strict atomic hospitality regulations.
1 House Rules: The Fundamental Laws of Lodging
Match each rule to its quantum law
Rule A Bunk Beds
Each room can hold a maximum of 2 guests, and they must sleep head-to-toe (opposite spins: \(\uparrow\downarrow\)).
Quantum Principle:
Rule B Elevator Broken
Guests are lazy and refuse to climb stairs. Always fill the lowest energy floors and sublevels first before opening higher suites.
Quantum Principle:
Rule C Personal Space
In equal suites (like 2p), guests take their own private single bed (\(\uparrow\)) before anyone is forced to share a room (\(\downarrow\)).
Quantum Principle:
Principle Bank: Hund's Rule • Pauli Exclusion Principle • Aufbau Principle
Suite Types (Orbitals) & Guest Capacities Fill in the missing values
s-Suite
1 box / room
Max: 2 guests
p-Suite
3 boxes / rooms
Max: _____ guests
d-Suite
5 boxes / rooms
Max: _____ guests
Order of Floors
Increasing Energy
1s → 2s → 2p → 3s → 3p
2 Guest Check-In Registry: Assigning Orbital Rooms
Draw spin arrows \(\uparrow\) and \(\downarrow\) inside each orbital box
C
Carbon Atomic # = 6 • 6 Electrons to check in
Valence Guests:
1s
2s
2p (\(2p_x, 2p_y, 2p_z\))
Standard Configuration Notation:
O
Oxygen Atomic # = 8 • 8 Electrons to check in
Valence Guests:
1s
2s
2p (\(2p_x, 2p_y, 2p_z\))
Standard Configuration Notation:
Mg
Magnesium Atomic # = 12 • 12 Electrons to check in
Valence Guests:
1s
2s
2p
3s
Standard Configuration Notation:
Hotel Quantum Guest Registry • Atomic Energy Levels & Orbitals Page 1 of 2
Floor Audit & The Valence Penthouse
Detecting booking violations and calculating outer-room VIP behavior
Night Shift Audit Report
3 Hotel Inspector Audit: Identify The Broken Rule!
Analyze the faulty room assignments below
Case 101 Element: Nitrogen (7 electrons)
Audit Status: VIOLATION DETECTED
1s
↑↓
2s
↑↓
2p
↑↓
↑
-
Rule Violated:
Why is this illegal?
Correct 2p rooms:
Case 102 Element: Helium (2 electrons)
Audit Status: VIOLATION DETECTED
1s Room
↑↑
Rule Violated:
Why is this illegal?
Correct 1s room:
Case 103 Element: Lithium (3 electrons)
Audit Status: VIOLATION DETECTED
1s
↑
2s
↑↓
Rule Violated:
Why is this illegal?
Correct 1s & 2s rooms:
The Valence VIP Lounge (Outer Floor Guests)
Electrons staying on the highest numbered principal floor (\(n\)) are called valence electrons. They interact with other hotels and determine how the atom bonds chemically! All electrons on inner floors are quiet "core" guests.
Chlorine (Cl • 17 guests):
Configuration: \(1s^2 2s^2 2p^6 3s^2 3p^5\)
Total Core Electrons: Valence Electrons:
Silicon (Si • 14 guests):
Configuration: \(1s^2 2s^2 2p^6 3s^2 3p^2\)
Total Core Electrons: Valence Electrons:
4 Mystery VIP Guest Challenge
Deduce the unknown identity from concierge records
Mystery Guest Alpha Clue File A
"This guest has fully booked the 1s and 2s rooms, and has exactly 3 guests relaxing in the 2p suites with parallel spins."
Atomic Number: Element:
Mystery Guest Omega Clue File B
"This noble guest has completely filled floors 1 and 2 (\(1s^2 2s^2 2p^6\)) and has zero guests on floor 3. It refuses to react with any other hotel."
Atomic Number: Element:
Hotel Quantum Guest Registry • Certified Atomic Operations Page 2 of 2
